名词
中文翻译：炉子煤
同义词：
['furnace coal', 'furnace coke']
例句：
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1.The stove needs some new coal to keep it running smoothly.
炉子需要一些新煤来保持其顺畅运行。
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2.The old stove is no longer efficient, so we need to replace the coal.
旧炉子不再高效，所以我们需要更换煤炭。
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3.The coal burns very hot and produces a lot of heat.
煤炭燃烧非常热，产生很多热量。